APA (7th ed.) Citation

Ryan, R. D. (1975). A comparison of two approaches to teaching drafting at the senior high school level. [publisher not identified].

Chicago Style (17th ed.) Citation

Ryan, Ray D. A Comparison of Two Approaches to Teaching Drafting at the Senior High School Level. [Place of publication not identified]: [publisher not identified], 1975.

MLA (9th ed.) Citation

Ryan, Ray D. A Comparison of Two Approaches to Teaching Drafting at the Senior High School Level. [publisher not identified], 1975.